Processes of formation and distribution of Pb-, Zn-, Cd-, and Cu-bearing minerals in the Tyne Basin, Northeast England: implications for metal-contaminated river systems

Article Abstract:

A general weathering reaction paragenesis of Pb-, Zn-, Cd- and Cu-bearing minerals is noted in mineralogical analysis of contemporary overbank river sediment, mining-age alluvium and mine-waste tips and of suspended solids in river waters. Sulfides become carbonates in high pH/pCO2, limestone-dominated source terrains. These and other contaminant metal-rich minerals such as silicates and manganese oxyhydroxides decrease and disappear downstream in lower pH shale/sandstone-dominated environments. These chemical weathering and dispersion processes may explain the resultant decline in sediment contents in the Tyne and other metal-contaminated rivers.

England, Rivers, Contamination, Microbial contamination, Minerals, Minerals (Geology)

---

Heavy metal pollution in the Rhine Basin

Article Abstract:

The Rhine Basin covers 200,000 square kilometers and runs through parts of Switzerland, Germany, France, Luxembourg and the Netherlands. The region is heavily industrialized and as a result, pollution levels are quite high. Heavy metal contamination in the Rhine Basin as a direct result of industrial pollution shows that more attention needs to be given to emissions reduction and strategies which mitigate the impact of pollution on soil and groundwater.

Pollution, Rhine Valley

---

Noncatalyst and catalyst-equipped automobiles and heavy-duty diesel trucks

Article Abstract:

The determination of tracer compounds by investigating the effect of fine organic particulate exhaust emissions to the Los Angeles atmosphere is discussed. Gas chromatography/mass spectrometry were used in the analysis of the chemical composition of gasoline and diesel powered vehicle exhaust aerosol samples. It was found that fossil petroleum markers, readily identified in the emissions, can be used as suitable tracer compounds.

Motor vehicles, Waste gases, Automotive pollution control equipment, Trace pollutants

Similar abstracts:

• Abstracts: Priority concerns. Integration of coal utilization and environmental control in integrated gasification combined cycle systems
• Abstracts: Tritium and radiocarbon dating of Canada Basin deep waters. Miocene deposits in the Amazonia foreland basin. Neptune's deep chemistry
• Abstracts: Computation Without Current. Lessons from litigation over silicone breast implants: a call for activism by scientists
• Abstracts: Nod factors and nodulation in plants. Evolution of insect resistance to Bacillus thuringiensis-transformed plants
• Abstracts: The challenge of large numbers. Life in the provinces of the Aztec Empire. Large igneous provinces

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.